Palmaris brevis

Dr Craig Hacking and Dr Geon Oh et al.

The palmaris brevis, a small intrinsic muscle of the hand, is a quadrangular-shaped subcutaneous muscle that overlies the hypothenar muscles, ulnar artery and superficial branch of the ulnar nerve at the medial side of the palm.


  • origin: palmar aponeurosis and flexor retinaculum
  • insertion: dermis of skin on the medial margin of the hand
  • action: improves grip
  • arterial supply: palmar metacarpal artery of deep palmar arch
  • innervation: superficial branch of the ulnar nerve

Anatomy: Upper limb
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Article information

rID: 45030
Section: Anatomy
Synonyms or Alternate Spellings:

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